Baking-machine.



C. A. COSTIGAN IL J. DENARO.

BAKING MACHINE.

APPLICATION FILED MAR. 27,1914.

Patented Deo. 26, 1916.

3 SHEETS-.SHEET I.

C. A. COSTIGAN & J. DENARO.

BAKING MACHINE.

APPLICATION FILED MAR. 27.1914.

LQQESQA Patented Dec. 26,1916.

3 SHEETS-SHEET 2.

C. A.COST|GAN L J. DENARO.

BAKING MACHINE.

APPLICATION FILED LIAR. 27.1914.

Patented Deo. 26, 1916.

3 SHEETS-SHEET 3.

J 32 /se Ja m M .o W

#LES A. COSTIGAN AND JAMES DENARO, OF OAKLAND,

CALIFORNIA.

. ranma-MACHINE. v

Lacasse.

' Speeicaton of Letters Patent.

Patenten nee. 2e, raie.

Application led March 27, 1914'. Serial No. 827,691.

To'aZZ whom t may concern:

Be it known that we, CHARLES A.. 'COSTI- GAN and JAMES DENARO, -citizens of the United States, residing at Oakland, in the county of Alameda and State of California, have vinvented certain new and useful lmprovements in Baking-Machines, of which the following'is a specification.

This invention relates to ovens, which are gas heated and in which the various operations take place continuously, the molds being automatically filled, passed through the oven and emptied lof their contents.

'The principal object of our invention is to provide Van oven forcontinuouslybaking ice cream cones and in which all operations .n Fig.

l herein are mechanicallyfperformed in order to produce superior cones in large quantities. With an oven of this character the cones may be produced much more cheaply than with 'the usual hand operated devices, also with the improved mold a neater cone is produced, at the same time all handling is eliminated, thereby making a more sanitary and cleanly product. ,n

With these and other objects in view our invention consists in the new and novel arrangement and combination of parts as described and as more specifically pointed out in the appended claims. Referring to the accompanying drawings, which form a part of the specification, Figure 1 is a view in plan of our improved oven. 2 isa view in -front elevation partly broken away to disclose the inclosing walls of the ovenportion and location of the gas Y burner. Fig. 3 is a detailed view in plan of mechanism 'upright shaft central with themech-anism for operating the batter feed. Fig. 4 is a view in elevation showing the j for lifting the upper portion of the molds and for rotating the-spider, which carries the same.' Fig. 5 is a detailedview in section with the molds in their closed .position and the operating mechanism for lifting the top part thereof. Fig. 6 is a detailed view in side elevation showin-g the top of a mold in its uppermost position and the batter feed container. Fig. 7 is a view in section on the line d7--7 Fig. 4. Fig. 8

is a detailed sectional view of the batter feed spout. Fig. 9 is a view in section on 9-,-9

Fig. 8.

Denoting corresponding parts .by the same-numerals of reference, ,1 denotes an the connecting a suitable frame 2 to which it is held by diagonals 3 and -braces 4. This shaft is pivotally mounted at its lower end in the step bearing 5 and at its upper end in the journal 6 and keyed near its center is a spider 7 to which are attached a number of radial arms 8. Below the journal 6 there is keyed to the shaft a collar 9 having anv angular flange 10 in which are held brace rods 11 which connect to the outer ends of arms 8. rl`he rotating frame thus constructed has imparted to it an intermittent rotary motion by means of the mechanism vshown in Figs. 8 and 4, consisting of a shaft 12 pivotally mounted in suitable bearings 13 and driven by a pulley 14 from any suitable source of power. Adjacent this shaft is a rigid upright member 15 having pivoted to its upper end the lever 16, one end of which is provided with a notch 17 adapted to engage the arms 8 for the purpose of holding them in a nonrotative position. On the other end of the lever 16 is mounted a roller 18 adapted to engage the cam 19 keyed on shaft D12. Adjacent this bar 15 vis a lever 20 moving in a slotted guide25, pivoted tothe frame at its lower end and carrying on its upper end'a pawl 22, which is adapted to engage the arms 8. A spring 23 holds the pawl in engagement therewith andthe lever has imparted to it an oscillating motion by means of a connecting rodv 24 pivoted intermediate the length thereof and to the face of cam 19. It will be evident that when the driving pulley 14 is rotated in the direction of the arrow that a rocking motion will be imparted to leverl 20 by the connecting rod 24 and this movement will cause the pawl 22 to drive the spider theright. During this forward movement the slot 17 is held below the arms 8 by vir-t tue of the fact that roller 18 is held up by the circular portion 26 of cam 19, and when vrod 24 has reached its eX- treme movement toward the right the cam will have rotated suflicient distance to allow the roller 18to drop onthe portion 26, thus throwing slot 17 into engagement with one of the varms 8. Further rotation brings lever`20 back to the left in position to engage the next succeeding arm. rlhe construction of these parts is .such that each revolution the shaft 12 advances the spider and assc and associated arms -to ciated parts an angular distance equal to each time -the arms stop the same-,relative angular position above the slotted end of lever 16.

Between each pair of arms 8, is placed the divided molds in which the cones4 are baked and the mechanism for operating each set of molds is the same, consequently, the description for one will serve for all. Each mold consists of twoside plates 27 having formed therein the conical recesses 28. On each end of these molds are attached arms 29 extending above the upper surface and being pivotally mounted in plates 30 and 31 held on the arms 8. An upper mold plate 32 is pro-` vided having the conical projecting members 32', which when the mold is closed projects into the recesses 28, but being somewhat smaller give a thin annular'space therebetween, in which the batter is held and baked. Lugs 33 are provided on the upper surface of this plate through which extends a rod 34,.this rod being pivotally mounted at 'its inner end in brackets 35 attached to the spider 7. The plates 27 are formed with lugs 36 on the sides thereof and the latter are pivotally connected to arms 37, which are mounted on rods 38. These rods are pivoted in plates 30 and 31 and are oscillated by means of curved bars 39 and 40 mounted in front of the machine. Plates 31 are provided with the depending portion 41 upon which is attached a guide for the vertically sliding bar 42. rllhis bar carries on its lower end a roller 43, which engages the underside of the curved bar 39 and the upper side of the curved bar 40. The upper end of this bar 42 is bifurcated and has attached thereto the links 44, which in turn are pivoted to arms 45 keyed to rods 38 on the outside of plate 30. Thus when the roller engages the surface 39 bar 42 is pulled downward as' shown at A of Fig. 2 and opens out the mold plates allowing the contents thereof to drop into a suitable receptacle. As the roller contacts with the surface 40 the parts are again forced upward until the pivotal points between the links and bar 42 are above the pivotal points of the links and arms 45, thus forming a lock to prevent the molds opening by pressure within the baking operation.

Back of plate 30 are two vertical T bar members 46 4clamped to the arms as shown at 47 and 48. The guides are provided on bars 48 'connecting these members in which is slidably mounted the member 49 and pivoted to the latter is a roller 50. Below this roller is attached a bracket 51 having pivotedV thereto a link 52 slidable in a sleeve 53 and having a spring 54 interposed therebetween. The lower end of sleeve 53 is pivotally attached to the rod 34 in which'the mold plate is. held. Guide bars 56 are provided on each side of this rod 34 so as to prevent lateral vmovement thereof.

On the upper connecting strip 48 there is mounted a spring controlled latch 58 having the projecting end 59 and a hook which engages the upper end of the sliding'member 49. During the baking operation plate 32 isv held tightly in contact with the upper surface of the mold plates 27 and the upper end of 49 is under the latch 58, the spring 54 being in compression to eXert the downward force which holds the mold plate upon the molds. Certain cam surfaces 61 and 62 are provided to contact with roller 50 to raise the bar 49 and withit the mold plate 31,

during the'discharging and filling operation, y

and to depress bar 49 after the lling of the molds until the upper end becomes engaged by the hook of the latch 58.

A tank is denoted by 65 in which is con-` tained the batter and from this tank is proattached to a bell crank lever` 72. The latter is supported upon a bracket arm 73 extending from the shaft supports 13. Back of vcam 19 there is mounted a second cam 75 which is adapted to impart an outward reciprocating motion to the rod 76, during the interval when the spider and molds are at rest. This bar is provided with a rollerl 7 7 where it contacts with the cam and is slidably mounted in a guide on the side of the bracket arm 73. Bar 76 is square or rectangular in section to prevent rotation thereof and is provided on the upper surface with a pin 78 which contacts with a slot S1 and the other arm of bell crank 72.

Within the foot 66 is a cylindrical tube formed of the T members connected by short section of tubing 91. The members 90 are provided with an interior division wall `92 so that there is formed a plurality of cylinders 93 in each of which is a piston 94. The tubular members 91 are provided on each side with an elongated slot 95-which is enlarged at one end or at 96.y Plunger 68 has attached within the foot a U shaped bar 97 having its arms parallel and fitting closely along the outside of the cylinders. Holes are provided in these arms in which bolts are provided which extend through the slotted openings 95 and through the pistons 94. By this means when the plunger is moved the pistons are all moved in unison therewith.

The outlet 67 of the T members is provided with a ball valve 99 sealed by a spring trapping a certain quantity of batter which prevents air from being sucked into the cylinders on the backward movement of the piston.

It will be evident that when the rod 76 isistons 94 forward. As the latter moves orward the openings 96 are closed thereby in the forward end of the cylinder which is discharged through valve 99, as the piston continues to move forward. Spring 82 causes the roller to follow the cam and restore the parts to the normal position. From the point B to the point C in the counter-clockwise direction the operation of .discharging, filling and closing the molds takes pla-ce, while from the point C to point B baking takes place and under this portion we provide a curved gas pipe 83 upon which is mounted a plurality of burners 84,

To conserve the heat we provide close above the top of the molds, a stationary plate 85 which extends over and is also in contact with the upper edge of plates 30 and 31, thus forming a close 'cavity above the molds. Likewise below the molds we provide stationary/vertical walls 86 and 87, which aline with the plates 30 and 31 respectively, and which are connected below the burners by plate 88. These plates extend from C to B providing throughout this distance the substantially air tight cavity in which the molds move, suitable gas outlets 89 being provided to carry off the products of combustion. v

The operation of this device is as follows As the molds emerge from the closed chamber at the ypoint B the extending end 59 of the latch 58 contacts momentarily with the bar 90 which pulls the hook from the top of bar 49 allowingthe spring 54 ,to'project the latter upward a sufficient distance to prevent relocking thereof. After this bar has become unlatched the roller 50 engages the cam surface 61 and is slightly raised thereby pulling up rod 34- and the mold plate 32 attached thereto. This slight upward movement serves to separate the conical projections from the cones which are held in the molds and as additional security against the cones separating from the molds we provide a series of corrugations 60 in the surface thereof which also serve to produce an ornamental design on the exterior ofthe baked cone. The next operation after this is the opening of the mold plates, which as heretofore explained, is accomplished by the roller 43 contacting with the cam surface 39. During this opening of the molds, conical members 32 prevent the cones from following either half of the molds thus insuring their complete removal therefrom. The operation from the unlatching to the discharging takes place during one forward movement of the device. During the next'forward movement the molds are closed and locked duringwhich time the plate 32 is being raised by reason of the roller 50 contacting with the inclined portion 61 which upward movement is continued during the succeeding movement. At the end of this period the roller 50 has reached its higher point and the plate 32 its position as shown in Fig. 6, the molds being directly under the spouts 67 of the feed mechanism. While the mechanism is thusstationary cam 75 operates the mechanism rassociated with the batter feed and injects a measured quantity into each 'mold During the next advance, plate 32 is lowered and'roller 50 engages the surface 62, which acts to depress bar 49 under latch 58 thus holding all parts tightly together as the molds enter the oven chamber at C. The baking .continues from this point to point C and it will ofcourse be understood that these several operations take place simultaneously and that approximately of the molds are always in the oven, the baking process being completed.

While we have shown the preferred eml bodiment of our invention it will of course be understood that minor changes maybe made in detail and form of construction without departing from the spirit thereof or sacrificing any of the advantages.

What we claim as new and wish to cover by lietters Patent is l. In a device of the character described, comprising a segmental gas heated oven, open at the ends, a plurality of molds revolubly mounted and adapted to pass through said oven, mittent forward movement to the revoluble structure carrying said molds, each of said molds consisting of two side plates and a f cover plate, said side plates being pivotally mounted and provided with alining recesses .110 in'which the baking takes place, a toggle joint connecting said side plates adapted to swing said side plates apart, close said plates and to hold the same against internal pressure during th'e baking operation, a cam 115 adapted tooperate said toggle-joint, means for placing a measured quantity of batter in said molds during the period when the said revoluble structure is at rest, and means for clamping said lid on said side plates before 12o said molds enter said oven.

2. In a device of the character described, comprising a plurality of molds mounted upon a revoluble structure, an oven through which said molds are carried by the rotation 125 means for imparting an interate said toggle joint, the latter being so disposed that the common pivoted ends of the links move past the center of the outer ends thereof forming a lock to prevent the internal pressure forcing the mold halves apart, a cover plate adapted to close said recesses, depending projections from said cover adapted to enter within said recesses and form a thin annular space therebetween.

3. A baking oven of the character described comprising a rotatable support provided with radiating members, molds carried by said radiating members, an oven thro-ugh which said molds are caused to travel, a rotatable shaft provided with a cam, a lever pivoted contiguous to said cam, means connected with said shaft for oscillating said lever, a pawl carried by said lever for engaging the radiating members to impart step-by-step movement to said sup- V port, and a latch operated by said cam to luccessively engage `said radiating memers.

4. In a device of the character described comprising a revoluble structure, a plurality of `molds carried by said structure, a segmental oven through which said molds are adapted to move, means for imparting an intermittent rotative movement to said structure and means for locking said structure 'during its periods of rest, said molds being formed of two pivotally mounted side plates, alining recesses between said plates, means for opening and closing said plates, a cover plate for said molds adapted to enter said recesses and form an annular recess therebetween and the walls of said recess, said cover plate being mounted upon a rod pivotally mounted adjacent the center of said rotative structure, a bar slidably Imounted above said rod, a sleeve pivotally attached to said rod, a rod pivotally attached to said bar, said rod having a limited sliding movement in said sleeve, a compression spring interposed between said sleeve and said rod, a spring controlled latch adjacent the upper end of said bar, a roller on the back of said bar, a fixed cam bar mounted upon the supporting frame of said device adjacent the exit of said oven, said cam bar being adapted towithdraw said latch from the top of said bar, a stationary cam bar adapted to engage said roller afterv said bar has been released and raise said cover plate and a second cam bar adjacent the entrance of said oven adapted to engage the upper side of said roller and depress said bar against the action of said spring and allow the said latch to engage the' upper end of said bar, thus holding the cover plate closed during the travel through said oven.

5. In a device of the character described comprising, a revoluble structure, a segmounted side plates and a cover plate, a rod pivotally vmounted .adjacent the center of said structure and carrying said cover plate on its outer end, a cam operated lock bar slidably mounted above said' rod, a resilient connection between said rod and said bar,a cam adapted to depress said bars before the molds enter said oven, a latch adapted to hold saidbar depressed and means for releasing said latch when the molds leave said oven.

6. In a device of the character described, comprising a revoluble structure, a segmental oven, a plurality of molds carried by said structure and arrangedto pass through Said oven, a cover plate for said molds carried by a rod pivoted to said structure, a lock bar attached to said rod, cam surfaces adapted to actuatesaid lock bar for the purpose of raising and closing said cover plate, a latch for locking said bar 4before the molds enter said oven and means for releasing said latch on the eXit of said molds.

In testimony'whereof we aflix our signatures in presence o f two witnesses.

CHARLES A. COSTIGAN.

i JAMES DENARO.

' Witnesses:

, W.-A. STOCK, R. M. OYARzo. 

